/*
 * Copyright 2002-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.autoconfigure.thymeleaf;

import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.util.ClassUtils;
import org.thymeleaf.extras.java8time.dialect.Java8TimeDialect;
import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;

/**
 * {@link ApplicationContextInitializer} adapter for {@link ThymeleafAutoConfiguration}.
 */
public class ThymeleafInitializer implements ApplicationContextInitializer<GenericApplicationContext> {

    private ThymeleafProperties properties;

    public ThymeleafInitializer(ThymeleafProperties properties) {
        this.properties = properties;
    }

    @Override
    public void initialize(GenericApplicationContext context) {
        ThymeleafAutoConfiguration.DefaultTemplateResolverConfiguration templateResolverConfiguration = new ThymeleafAutoConfiguration.DefaultTemplateResolverConfiguration(this.properties, context);
        context.registerBean(SpringResourceTemplateResolver.class, templateResolverConfiguration::defaultTemplateResolver);
        if (ClassUtils.isPresent("org.thymeleaf.extras.java8time.dialect.Java8TimeDialect", null)) {
            context.registerBean(Java8TimeDialect.class, () ->  new ThymeleafAutoConfiguration.ThymeleafJava8TimeDialect().java8TimeDialect());
        }
    }
}
